Trim a string based on the string length

Question

I want to trim a string if the length exceeds 10 characters.

Suppose if the string length is 12 (String s=\"abcdafghijkl\"), then the new trimmed string

Answer 1

str==null ? str : str.substring(0, Math.min(str.length(), 10))

or,

str==null ? "" : str.substring(0, Math.min(str.length(), 10))

Works with null.